395 entries under adjective topic. ×

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decisive(determined, serious, resolute, persistent)
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dedicated(clear, strong, tough, severe)
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energetic(strong, sound, tough, solid)
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gluey(tough, thick, syrupy, tacky)
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gritty(strong, tough, determined, steady)
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gummy(secure, thick, tacky, sticky)
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gutsy(strong, tough, determined, vigorous)
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hidebound(determined, resolute, persistent, obstinate)
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iron(strong, tough, firm, solid)
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lasting(tough, firm, true, fixed)
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loyal(firm, true, fixed, resolute)
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patient(strong, firm, determined, steady)
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perseverant
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pig-headed(determined, resolute, obstinate, stubborn)
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recalcitrant(tough, firm, difficult, wild)
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stable(strong, sound, secure, tough)
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uncooperative(difficult, wild, awkward, persistent)
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unfailing(strong, firm, determined, steady)
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unshakeable
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willful(tough, firm, difficult, resist)
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APASmart Define. (2015). tenacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, tenacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>.
MLASmart Define. "tenacious thesaurus" 6 November 2015. Web. 24 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms>